Nonequilibrium spin transport in integrable and nonintegrable classical spin chains

D Roy, A Dhar, H Spohn, M Kulkarni - Physical Review E, 2024 - APS
Anomalous transport in low dimensional spin chains is an intriguing topic that can offer key
insights into the interplay of integrability and symmetry in many-body dynamics. Recent …

Amplifying a zeptonewton force with a single-ion nonlinear oscillator

B Deng, M Göb, BA Stickler, M Masuhr, K Singer… - Physical Review Letters, 2023 - APS
Nonlinear mechanical resonators display rich and complex dynamics and are important in
many areas of fundamental and applied sciences. Here, we present a general strategy to …

Modeling reservoir computing with the discrete nonlinear Schrödinger equation

S Borlenghi, M Boman, A Delin - Physical Review E, 2018 - APS
We formulate, using the discrete nonlinear Schrödinger equation (DNLS), a general
approach to encode and process information based on reservoir computing. Reservoir …

Energy and magnetization transport in nonequilibrium macrospin systems

S Borlenghi, S Iubini, S Lepri, J Chico, L Bergqvist… - Physical Review E, 2015 - APS
We investigate numerically the magnetization dynamics of an array of nanodisks interacting
through the magnetodipolar coupling. In the presence of a temperature gradient, the chain …

Spin-Josephson effects in exchange coupled antiferromagnetic insulators

Y Liu, G Yin, J Zang, RK Lake, Y Barlas - Physical Review B, 2016 - APS
The spin superfluid analogy can be extended to include Josephson-like oscillations of the
spin current. In a system of two antiferromagnetic insulators (AFMIs) separated by a thin …

Entropy production for complex Langevin equations

S Borlenghi, S Iubini, S Lepri, J Fransson - Physical Review E, 2017 - APS
We study irreversible processes for nonlinear oscillators networks described by complex-
valued Langevin equations that account for coupling to different thermochemical baths …

Gauge invariance and geometric phase in nonequilibrium thermodynamics

S Borlenghi - Physical Review E, 2016 - APS
We show the link between U (1) lattice gauge theories and the off-equilibrium
thermodynamics of a large class of nonlinear oscillators networks. The coupling between the …

Micromagnetic simulations of spin-torque driven magnetization dynamics with spatially resolved spin transport and magnetization texture

S Borlenghi, MR Mahani, H Fangohr, M Franchin… - Physical Review B, 2017 - APS
We present a simple and fast method to simulate spin-torque driven magnetization dynamics
in nanopillar spin-valve structures. The approach is based on the coupling between a spin …

Nanoscale control of heat and spin conduction in artificial spin chains

S Borlenghi, MR Mahani, A Delin, J Fransson - Physical Review B, 2016 - APS
We describe a mechanism to control the energy and magnetization currents in an artificial
spin chain, consisting of an array of permalloy nanodisks coupled through a magnetodipolar …

Stochastic Thermodynamics of Oscillators' Networks

S Borlenghi, A Delin - Entropy, 2018 - mdpi.com
We apply the stochastic thermodynamics formalism to describe the dynamics of systems of
complex Langevin and Fokker-Planck equations. We provide in particular a simple and …